Windows Server

Matthias · Guest

Hi,
We would like to migrate three SNA4.0 SP4 Server to one of HIS2004.
I read about "snacfg.exe" but I'm not sure how I'm able
to import three files in one. And in wich way I import the data.
Thank you for any suggestion

ablÃ¶sen

regards Matthias

Aaron Grady [MSFT] · Guest

Matthias-

This isn't exactly what you're looking for, but it will give you an idea of
how you need to use SNACFG:

222087 How To Combine Multiple SNA Subdomains Into One Subdomain by Using
Snacfg
http://support.microsoft.com/?id=222087

The difference in your case is that you want to put all of the resources for
the three servers onto one config file with one server name.

HTH,
--
Aaron Grady
MCSE + Internet, MCDBA, MCSD
SNA Server/Host Integration Server 2000
Microsoft

This posting is provided "AS IS" with no warranties, and confers no rights.
Use of any included samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

"Matthias" <jarka@web.de> wrote in message
news:348063A1-9F05-4CCB-99C6-B3CBDF715BAE@microsoft.com...

L Ring · Guest

I have done this with multiple SNA Servers going to 1 HIS 2000 domain. I
followed the guidelines in the artlicle referenced by Aaron for the most part
with some exceptions.

After exporting each SNA 4.0 configuration into individual text files. Then
I used notepad to combine the text files. After combining the files then I
did have to do some editing because I was renaming servers, and domains,
etc... Also I am not sure how many servers you have in each of the three
domains, but there is a limit of I believe 15 servers in one domain for HIS
2000. In my case I have more that 25 servers so I also had to do this in a
couple of passes and consolidated the resources to the appropriate new
servers by using the editor.

Also after you get your new configuration file built you will need to run
the snacfg with the /validate switch to properly create the user SID(s).

Hope this helps. I can send you more information if you need it.

"Matthias" wrote:

Matthias · Guest

Thank you very much for your responses. I will try to follow your guidelines.
If I have any questions, I will come back again.

Still one question about the nic's. I've heard that under SNA 4.0 only two
nic's are possible. How many are there under HIS2004.
Or is the first statement wrong.

Regards
Matthias ( jarka@web.de )

"L Ring" wrote:

Neil Pike · Guest

Matthias,

SNA shouldn't care about the NIC's as the underlying o/s handles those.
Certainly it doesn't care how many tcp-ip nic's you have. If there's a limit on
how many nic's have DLC bound to them it's not one I'm familiar with.

What is your setup that you need more than two nic's anyway?

Matthias · Guest

Neil,
my customer has three server in three separate SNA Subdomains. The used
Service is tn3270. The actual quantity taken has shown that he didn't know
what he did. And he want to keep hold this design. His goal is a load sharing
between the branches. If one server down than the other braches have the
continuing ability to work. I KNOW that this is not the right approach.
What would the best to do this with two server.
My view is, all the LU's on both server and a load balancing between them.
By the way, also we will update the hole infrastructure from NT4 to W2k3.
Matthias

"Neil Pike" wrote:

Neil Pike · Guest

Matthias,

If they're using TN3270 then HIS's normal LU sharing/resilience doesn't usually come
into play because you're pointing at a TN3270 IP address and not actually using SNA
client which can transparently get a resource off one of many servers.

You have various options.

1. If all servers are on the same subnet you could in this instance use WLBS to
provide a cluster IP address.

2. Point the clients at a DNS name that round robins the IP address of the three
servers.

3. TN3270 clients can typically point at multiple IP addresses. Just code the
client emulator config to point at all three servers. Vary the order depending on
which branch they are in, so that the local server is always used first.

From the sounds of your "branch" environment I'd say option 3 was the way to go

L Ring · Guest

You can use TN3270 Pools to load balance. If you combine the multiple SNA
Subdomains into one subdomain then you can create a single common TN3270 Pool
with SNA LU resources from each server. By default the SNA servers will load
balance the requests between the multiple HIS Servers in the domain. For this
to work make sure that if you have multiple TN3270 pools that all pools have
resources from all servers in them. There are several good Q articles on
TN3270 load balancing using pools.

http://support.microsoft.com/default.aspx?scid=kb;en-us;893267

See Q article 256986
How to distribute pooled 3270 application resources and LUA application
resources across multiple computers that are running SNA Server or Host
Integration Server

"Matthias" wrote:

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